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CRAT Study Guide /Questions And Answers Rated (A+)
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CRAT Study Guide /Questions And Answers Rated(A+)
Quiz:Normal PRI interval - Answer :0.12-0.20
Quiz :Normal QRS interval - Answer :0.11 or less
Quiz :What does the P wave represent? - Answer :Atrial depolarization
Quiz :What does the QRS complex represent? - Answer :Atrial repolarization
and ventricular depolarization
Quiz :Q wave indicates what? - Answer :Dead myocardial tissue. Always a
negative deflection
Quiz :What is the natural pacemaker of the heart? - Answer :SA node
Quiz :3 types of pacemakers - Answer :1) single (either RA or RV)
2) dual chamber (RA and LV)
3) bi-ventricular (RV and LV --> Congestive Heart Failure)
Quiz :Which HB would you NOT need a pacemaker for? - Answer :First-degree
AV block (prolonged PRI >0.20 seconds)
Quiz :Define intrinsic beats - Answer :The patient's own heart beat
Quiz :What is sensing? - Answer :The ability for the heart to sense and
respond to the electrical activity of the heart
Quiz :What is capture? - Answer :The pacemaker sends a stimulus to the heart
which causes the heart to depolarize
Quiz :Failure to sense - Answer :Lack of pacemaker spikes where they should
have been. Battery can be dead.
Quiz :Failure to capture (loss of capture) - Answer :No P or QRS after the
pacemaker spike
Quiz :Undersensing - Answer :Pacemaker spikes in areas where they should
not be (i.e. in the T wave, an ST segment, or on top of another QRS)
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